import numpy as np

# 创建一个二维数组
arr1 = np.arange(1, 5).reshape(2, 2)
arr2 = np.arange(5, 9).reshape(2, 2)

add12 = arr1 + arr2

arr_sqrt = np.sqrt(arr1)

than_2 = arr1 > 2
equal_12 = (arr1 == arr2)